Spindle-driving mechanism



Jan. 30, 1923.

E ATWOOD SFINDLE DRIVING MECHANISM. FILED Auc. 13 1921.

.252 2/ 6 n% r, @d u.

Patented Jan. 30, 1923.

ill it i ll I i l EUGENE ATWOOD, OF STONING-TGN, CONNECTICUT, ASSIGNOB TOIUZVIOOD MACIE-IINE COMPANY, OF STOI TING-TON, CONNECTICUT, GORPGEAT ION OF NEW srInnLE-nnrvn TG trncrranrsiu.

Application filed August 1? 1921. Serial No. 492,010.

To all 1072 0727 may concern Be it'lcnown that l. Etienne Arm eon, a citizen of the United States, and resident of Eitoningtoin in the county oi? New London and State of Connecticut. have invented a new and useful Improvement in Spindle- Driving Mechanism, of which the following is a specification.

The object of my invention is. to provide a novel means for driving spindles, said means including a spindle driving" pulley having one or more yielding elements arranged in position to frietionally engage the spindle whorl for driving it. My invention more particularly includes a spindle driving pulley having one or more bulging flexible straps of leather or other suitable fabric so arranged that the centrifugal force, due to the rotary movement of the pulley will keep the flexible straps bulging awayirom the pulley, except where they are attached thereto, so as to cause the straps to yieldingly ens gage the spindle whorls with a friction drivinq contact.

ractical embodiments of my invention are represented in the accompanying drawings, in. which- Fig. 1 represents one embodiment of my spindle driving pulley in top plan, in operative relation with four spindles.

Fig. 2 represents a detail section taken in theplane of the line ll-ll of Fig. 1.

Fig. 3 represents a spindle driving pulley of modified form, in side elevation.

Fig. 4.- represents atop plan view of the same, and

Fig. 5 represents, in side elevation,. a spindle driving pulley of another form.

The spindle herein shown is denoted by 1 and its whorl by 2. The spindle driving pulley is denoted by 3.

The spindle driving pulley is provided with one or more yielding elements adapted to be thrown out by centrifugal force into position to frictionally engage the spindle whorls 2.

In the embodiment shown in Figs. 1 and 2, I have shown three of these yielding elements which are bulging flexible straps 4 secured at their ends by suitablefastening means, such as screws 5, to the periphery of the pulley 3. Sufiicient tt'ulness is providedin each of the straps between its ends to ensure its being thrown out by the centrifugal force due to the rotary movement of the pulley into position to yieldingly iirictionally contact with the spindle whorls 2 for driving the same. T in the en'lhooiment shown i 4, l have shown a plurality of overlapping bulging flexible straps more continuous driving action on the spindle whorl. These strapsklare secured at their ends by suitable fastening means such as screws' to the periphery of the pulley 3.

end of eachstrap 4** as vedly secured. to the pulley by the screw while the other end 0'? the strap is se cured to the pulley by the screw so thatit may have a slight movement; This may be provided for by a elongated slot 6 in the strap through which the fastening screw 5*"" passes.

The driving pulley 3is preferably prol igs. 3 and 4* so as 'to obtain a.

In the form shown in Fig. 5, I have shown one iii)" vided with flange 7 which projects beyond the straps at their points of attachment to the pulley so that the spindle whorl may be adjusted properly to prevent the attached ends of the straps from striking the spindle whorl.

These yielding elementsmay be made of any suitablematerial such, for instance, as leather straps.

By the provision of the spindle driving pulley with one or more yieldingelements I am enabled to secure avery effective driving connection between the pulley and the spindle whorl, said connection being one consuming a minimumamount of power and ensuring high speed for the spindle.

It is evident that various changesmay be made in the construction, formand arrangement of the several parts without departing from the spirit and scope of my invention; hence I do not 'W1Sl1 to limit myself to the particular embodiments herein shown and described. but

tion to frictionally engage the spindle.

whorl. p

3. A spindle driving pulley having one or more bulging flexible straps adapted to be thrown out by centrifugal force into position to frietionally engage the .spindle whorl. I

4:. A spindle driving pulley having one or more bulging flexible straps adapted to be thrown out by centrifugalforce into position to frictionally engage the spindle whorl, each strap being secured at one end to the pulley.

A spindle driving pulley having one or more bulging flexible straps adapted to v be thrown out b centrifu 'al force into 0sition to frietionally engage the spindle whorl, each strap being secured at both ends to the pulley.

, 6. A spindle driving pulley having a plurality of overlapping bulging flexible straps adapted to be thrown out by centrifugal force into position to frictionally engage the spindle wh0r1.

7. A spindle driving pulley having one or more bulging flexible straps adapted to be thrown out by centrifugal force into position to frictionally engage the spindle whorl, each strap being secured at one end to the pulley, said pulley having a flange projecting beyond the strap at its point of attach Inent to the pulley.

8. A spindle driving pulley having one or i EUGENE ArWoon. 

